Premium-efficiency motors slash electric costs during eight-hr operation.
Mar 1, 1996, Lawrie, Robert J.
Premium-efficiency motors replace old, poorly rewound standard motors, resulting in noteworthy savings while operating on a single shift.Contrary to popular...
Don't let the new Design E motor throw you a curve.
Mar 1, 1996, Revelt, Jean A.
Analysis of Design E motor characteristics reveals surprising properties that may have a significant impact on your choice of "energy-efficient" motors.In...
Wiring a building switchboard from an outdoor transformer.
Feb 1, 1996, Hartwell, Frederic P.
Many rules must be correlated when a customer-owned outdoor transformer supplies a large switchboard.We received a deceptively simple question about the...
Using motors in wet and damp environments.
Jan 1, 1996,
These application tips and suggestions will help extend motor life in these hostile environments.If you have a motor application that involves operation...
Establishing an electrostatic discharge control program.
Dec 1, 1995, Knisley, Joseph R.
What is electrostatic discharge and how can it be controlled to prevent damage to micro electronic components?Electrostatic discharge (ESD) can cause...
How to perform short-circuit calculations, part 2.
Dec 1, 1995, Mercede, Frank J.
Performing short-circuit calculations requires an understanding of various system components and their interaction.In Part 1 of this article, which was...
Upgrading a plant outdoor substation.
Dec 1, 1995, Lawrie, Robert J.
Photo story reveals design and construction details of a substation expansion that combines new 15kV equipment with existing 5kV systems.Flexibility of...
Tamper-resistant receptacles: the rules have changed.
Nov 1, 1995, Currall, John
What tamper-resistant products are UL-listed and what test methods are used?Tamper-resistant receptacles are the only devices that are specifically tested...
Can four 5kVA buck-boost transformers supply a 20kVA load?
Oct 1, 1995, Lawrie, Robert J.
Q Can I connect four 5kVA buck-boost transformers in parallel to supply a 20kVA load? - L.J.F.A Four 5kVA buck-boost transformers can be connected in...
What do electrical professionals really want?
Oct 1, 1995, DeDad, John A.
A few months ago, we had the opportunity to gather together a group of electrical professionals to speak their minds and vent their frustrations on the...
Service protection higher than ampacity
Sep 1, 1995, Stallcup, James G.
A lighting and appliance branch-circuit panelboard must have individual over-current protection. The overcurrent protection may be the fuses or circuit...
Controlling building noise with good electrical designs.
Sep 1, 1995, Knisley, Joseph R.
Depending on the space in question, the attention given to acoustical sound attenuation is as important as the location of power and communications outlets,...
Multiple generators provide power for peak shaving/emergency systems.
Aug 1, 1995, Lawrie, Robert J.
Modular 4160V generators slash $1 million off annual electric bills and assure emergency power. Versatile monitoring, control, and PLC systems integrate...
Providing four megs of power to protect computers.
Aug 1, 1995, Bender, Gayland J.
Fast track design and construction, thorough testing, and adjustments as needed provide power assurance to client's data operations.A strong concern for...
Using AC coils on DC power
Jul 1, 1995, Hoestenbach, Roger D.
You can use AC coils on DC circuits providing you apply enough DC voltage to draw the same amount of current as when operating on AC.Here's an alternative...
